4001432232 has 128 divisors (see below), whose sum is σ = 11751321600. Its totient is φ = 1111719168.

The previous prime is 4001432219. The next prime is 4001432233. The reversal of 4001432232 is 2322341004.

It is a super-2 number, since 2×4001432232² = 32022919814577003648, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 4001432199 and 4001432208.

It is not an unprimeable number, because it can be changed into a prime (4001432233) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1285494 + ... + 1288602.

It is an arithmetic number, because the mean of its divisors is an integer number (91807200).

Almost surely, 2^4001432232 is an apocalyptic number.

4001432232 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4001432232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5875660800).

4001432232 is an abundant number, since it is smaller than the sum of its proper divisors (7749889368).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4001432232 is a wasteful number, since it uses less digits than its factorization.

4001432232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3335 (or 3331 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 4001432232 is about 63256.8749781397. The cubic root of 4001432232 is about 1587.5904899087.

Adding to 4001432232 its reverse (2322341004), we get a palindrome (6323773236).

The spelling of 4001432232 in words is "four billion, one million, four hundred thirty-two thousand, two hundred thirty-two".